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Cushion|Natural|GIA

0.91ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1242010099

Certificate GIA 1242010099

Diamond specifications and retailer prices

From £1,198 GBP
$1,592 USD
As of October 28, 2026
Save £1,348 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,546 GBP at Moon Ocean · As of October 29, 2026
View at Moon Ocean

About this 0.91ct natural cushion diamond

This 0.91ct natural cushion sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1242010099. Listed at 16 retailers as of October 28, 2026, with prices from £1,198 to £2,546, a £1,348 spread on the same certified stone. Moon Ocean lists it at £2,546. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.91
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242010099
Dimensions6.64 × 5.00 × 3.29 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.64 mm5.00 mm0.91 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1242010099
Side View
Table 69.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 65.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £2,546 GBP|Low: £999 GBP|High: £2,563 GBP|Avg: £1,668 GBP|-0.6%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8£1,214 GBP
Retailer 11£1,322 GBP
Retailer 5£1,340 GBP
Retailer 3£1,362 GBP
Retailer 10£1,409 GBP
Retailer 9£1,720 GBP
Retailer 4£1,795 GBP
Retailer 6£1,922 GBP
Retailer 7£1,996 GBP
Retailer 2£2,318 GBP
Moon Ocean£2,546 GBP

35 data points across 11 retailers

16 retailers£1,198 GBP to £2,546 GBP

B+
Cheapest Retailer
-
£1,198 GBP
$1,592 USD
B+
Retailer 2
-
£1,198 GBP
A$2,450 AUD
View
B+
Retailer 3
-
£1,214 GBP
$1,613 USD
View
Final sale: no returns
B
Retailer 4
-
£1,322 GBP
$1,757 USD
View
B
Retailer 5
-
£1,340 GBP
View
B
Retailer 6
-
£1,362 GBP
$1,810 USD
View
B
Retailer 7
-
£1,383 GBP
$1,838 USD
View
B
Retailer 8
-
£1,409 GBP
$1,872 USD
View
B
Retailer 9
-
£1,419 GBP
$1,885 USD
View
B
Retailer 10
-
£1,720 GBP
A$3,517 AUD
View
Price last confirmed 25 days ago
B
Retailer 11
-
£1,795 GBP
€2,271 EUR
View
B
Retailer 12
-
£1,922 GBP
ZAR 41,266 ZAR
View
B
Retailer 13
-
£1,996 GBP
$2,653 USD
View
Price last confirmed 26 days ago
B
Retailer 14
-
£1,996 GBP
$2,653 USD
View
B
Retailer 15
-
£2,318 GBP
View
Most Expensive
B
Moon Ocean
NVN-09F110826-099 · Oct 29
£2,546 GBP
View
15 more retailers have this diamond
Prices start from £1,198 GBPSave up to £1,348 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.91ct Cushion
£1,198 GBP